Food safety and quality
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Flavouring |
alpha-Ionone |
Synonym(s) |
alpha-Cyclocitrylideneacetone |
Latest JECFA evaluation |
2001 (Session 57) |
Status of specification |
Full |
Information required |
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Chemical name |
4-(2,6,6-Trimethyl-2-cyclohexenyl)-3-buten-2-one |
JECFA number |
388 |
CAS number |
127-41-3 |
FEMA number |
2594 |
COE number |
141 |
FLAVIS number |
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Molecular weight |
192.3 |
Chemical formula |
C13H20O |
Physical form/odour |
colourless to pale-yellow liquid with a warm, woody, violet-floral odour |
Solubility |
soluble in alcohol, propylene glycol, most fixed oils; insoluble in glycerol and water |
Solubility in ethanol |
1 ml in 3 ml 70% alcohol; 1 ml in 10 ml 60% alcohol |
Boiling point (°C) |
237° |
Assay min % |
85% (min. 95% sum of isomers) |
Acid value max |
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Refractive index |
1.497-1.502 |
Specific gravity |
0.927-0.933 |
Other requirements |
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ID Test |
IR |
Spectrum |
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